10 
INSECTA SAUNDERSIANA. 
brown pile, with a very thin and slight whitish mixture: the first joint of 
the tarsi only is densely fulvous, the second and third are brown, and the 
terminal slightly whitish pilose. 
Stenocerus Amazons, Jekel. 
Ovatus, robustior, piceus , fundo obscure brunneo tomentosusy margine 
interiori oculum lineolaque media verticis, thoracis nebula discoidali 
punctoque laterali ante medium, scutelloy elytrorum sutura intersti- 
tiisque alternis basi utrinque posticeque subplagiatimy tibiarum an- 
nulo ante-medio tarsisque omnino Jlavo-fulvescente squamosis ; thorace 
lateribus mediocriter bisinuato, magis transversoy maculis duabus 
apicalibus tribusque ante medium transversaliter positis lineolaque 
intra-laterali antice posticeque evanescente dilute fuscis aut brunnes- 
centibus, interdum obsoletis , ornato ; sutura interstitiisque alternis 
elytrorum parum elevatis, fusco tessellatis. 
Synon.: Stenocerus robustus, Dej., sec. Dom. Buquet (Cayenna). 
Stenocerus migratoriuSy Chevrolat, var. in litt. (Cayenna). 
Patria: Cayenna, Dom. Buquet et Chevrolat: Amazona, Dom. Bates. 
This species, closely allied to Sten. migratorius in coloration and size, 
is proportionally more robust and convex, and less elongate. Having seen 
a large number of both species, I have found the following constant 
differences:— 
The present species is proportionally still broader and shorter, espe¬ 
cially in the elytra; these are more depressed in the middle, but less so at 
the sides ; the oblique elevation running from the shoulder is more abruptly 
and obliquely directed inwards; they are more evidently narrowed towards 
the apex, more so than in any other species in this group, and they are 
thicker and more obliquely slanting posteriorly : the thorax is more convex, 
narrowed and elongated proportionally, indeed less conic, although as 
deeply bisinuate at the sides ; the anterior lobe is more angular and less ob¬ 
lique ; its median elevation is obsolete from a little behind the middle to the 
base, so that the basal depression is entire and deeper : the rostrum is less 
flattened at the apex and more elongate, &c. 
Having seen in the Parisian collections two different species bearing 
the name of Sten. robustus , Dej., and not knowing which is the true 
one, I prefer using for this present species the name of Sten. Amazonas, 
